Hello,
Hope you're doing well, allow me to get right into it.
I looked at your website's client-side code and it seems that you're using TradingView API to get the info required, what that means is all we have to do is ask TradingView for "extra" symbol, we'll chose what they are and your website should be able to display them properly.
I need to see exactly which TradingView library version you're using and then add the symbols for you and show you exactly how I did it.
This should not take longer than a few hours and you'll only have to pay me after I deliver everything.
Looking forward to hearing from you,
Thanks for reading,
Mario Adabachy.